Question: Why use mobile phone signal jammers in gas stations, oil depots and other places?
Answer: The current mobile phone signal is almost everywhere, and all electrical equipment is surrounded by it. When the mobile phone is not in use, the interference of this heavily surrounded signal on other electrical equipment is minimal. This is because there is no data exchange between the mobile phone and the base station when the mobile phone is not in use, and it is impossible to form a sudden signal. There is a relatively stable electromagnetic field around electrical equipment, that is, a static electromagnetic field, which has almost zero interference to electrical equipment. When using a mobile phone, there is data exchange between the mobile phone and the base station, which generates a random mutation signal, forming a dynamic electromagnetic field around the electrical equipment. This dynamic electromagnetic field signal will induce a mutation interference signal, which is easy Cause malfunction of electrical equipment. When the cell phone battery starts up, when the ringer rings, it can generate enough energy to cause a slight spark to produce an electric spark, which may cause a fire.
Petroleum, chemical, safety and other relevant departments have expressly stipulated that the use of mobile phones in gas stations is prohibited. It has been issued for a long time, but the current implementation situation is not ideal. The equipment at the gas station is controlled by computers, and the mobile phone signal will affect the normal operation of the equipment, which will lead to inaccurate measurement. More importantly, sparks will appear during the dialing process of the mobile phone, which can easily cause a fire and cause the gas station to explode. Therefore, the use of mobile phones is not only strictly prohibited in gas stations that are fire prevention sites, but it is also best not to use mobile phones within two or three meters around the gas station. At the same time, gas stations should set up obvious signs prohibiting calling mobile phones, and widely publicize safety knowledge, so that people understand that using mobile phones in gas stations is undoubtedly walking with tigers. There have been many fires caused by the use of mobile phones across the country. At a gas station in Henan, a driver used a mobile phone while refueling, causing an explosion, resulting in a serious accident that killed and injured many people. There are also many fire dangers caused by mobile phone calls in gas stations in Shenzhen, Chongqing and other places. The dangers of using a cell phone at a gas station have drawn attention from many quarters.
Relevant departments in Beijing, Hubei, Inner Mongolia, Guangdong, Henan, Shandong, Jiangxi, Sichuan, Chongqing and other places have suggested that gas stations under their jurisdiction use mobile phone signal jammer. Sinopec Corporation and CNPC have taken the lead in using mobile phone signal jammers at gas stations in some areas.